Device for preventing the theft or unauthorized use of automobiles



Aug. 22, 1933. W.BLASCHK 1,923,907

DEVICE FOR PREVENTINGTHE THEFT OR UNAUTHORIZED USE OF AUTOMOBILES Filed Oct. 50, 1951 IU v i 0 f'lji I l I I a) I I {W E! I M'l \C l 1 d n k I: S i

H O31 l |l' e g v Patented Aug. 22, 1933 i DEVICE FOR PREVENTING THE OR UNAUTHORIZED USE OF AUTOMOBILES Willy Blaschk, Berlin, Germany Application October 30, 1931. Serial No. 572,197 3 Claims. (01. 7090) The invention relates to a device for preventsteering shaft in o d to block this P of the ing the theft or unauthorized use of automobiles steering S n T front d of d bolt h y and more particularly to a device which to this a v e -D of shnple D which D end blocks the steering arms of the front wheels t a s to 8 recess o e of the Parts referred 5 irrespective of whether said. wheels are in a t W t e b t 71 as bee b u t t t 60 straight or oblique position. The same purpose utmost P t by d e 6 having reached may also be attained by the shaft contained in its lowest Position. the Wheels are bl against the steering column being braked by the novel teering independen y of e angle of obliquity device referred to, they show, provided that the lock bolt 1) has been 10 The main object of the invention consists in secured in its corresponding notch e tubu- 65 providing means by which a thief or an unaublsneh containing and guiding respectively thorized user is prevented from using the autoe said bo t ay be o e t d to e u a mobile by the fact that the steering gear is renbody a y w i r in any h r i l ydered ineffective. Its free end, through which bolt h can be inserted The following is given as an example of how or Withdrawn, y e l s d y a screw as m o 7 the invention may be practically made use of the like- The slots 1 f the i tubule-1 branch but the invention is not lifnited hereto and may a safely guide the wedge c so t o o y th be suitably modified within the scope of the inselne and the ub b co ected therewit are sevention as stated by the description and the cured against turning but s the lock bolt P so claims appended. that it is prevented from missing its notch p.

In the drawing, Only by using the special key belonging to the Fig. 1 is a sectional vertical view of the desafety look 0 it is Po t e ea the d 1 vi a d or the corresponding locking pin from the part Fig. 2 diagrammatically shows the positions of blocked of t e stee in ea by liftin t e tubu- 5 the front'wheels when the latter are to be blocked 1&1 body!) a d so to render t again lit o go by t d i running. As compared with safety devices al- In Fig 1 a is t l body t be fastened t ready known the novel device above described the dash or chassis of the car in any suitable affords the advantage that the bloeklug P t manner so that the lower end containing the P p is hidden in P Very little conspicu- 0 movable part is arranged about in the height of ous and not accessible, a a r to h iz t parts of t steering gear or shaft t be users. Moreover also the point where the blockblocked by the device. Within the tubular body 8 device can be released i hidden W h the a is arranged a tube 1) carrying at itslowe d car so that an unauthorized user is not aware of a driving wedge c of flat or oval cross section the feet that there is some blocking d ce a d 35 and at its top a safety lock 0 of any suitable unab to quickly detect where and how the car system the bolt p of which enters the notch ,1" a be brought into a p iv co di ion. when the tube b and accordingly the wedge c What I claim as my invention, and desire to are to be kept in their lower, viz. locking position. secure by-Letters Patent, is The said'wedge 0 provided with the wedge face 1. A device for preventing the theft or unau- 40 proper d and bearing surface e is guided, so as to thorized use of automobiles which comprises a be secured against turning, by a slot I provided bolt slidable in a tubular body, a wedge pressing for in the tubular branch g in which is slidably the said bolt against thesteering lever or shaft mounted'a bolt it upon which a pressure is exof an automobile when being displaced, a tube e by a spring 5. The head i of the said bolt connected to said wedge and carrying the bolt of 45 h and which is noted p y t e ge face d a safety look, a tubular body in which the said may be provided with a roller k so that the fric-' tube is slidably mounted and a notch arranged tion between head i and face d is diminished in the said tubular body and intended for receiv- W n t e Wedge o is being lowered i o d to ing the said bolt of a safety lock so as to secure displace the bolt h in an outward direction. The th aid t be and th wedge n t d ther t 50, bearing surface e of the wedge c is shaped like in'their locking position. a hook and partially surrounds the head of the 2. A device for preventing the theft or unau-' bolt it so as to limit the upward movement of the thorized use of automobiles which comprises a tube 1). The front end of the bolt It may be probolt slidable in a tubular body, a wedge pressing vided with a fork head I which is to bear against the said bolt against the steering lever or shaft 55 the steering lever of a front wheel or against the of an automobile, the lower end of which wedge is hook-shaped and surrounds the inner end of the said bolt s as to limit the upward movement of the said wedge. a tube connected to said wedgeand carrying the bolt of a safety look, a tubular body to guide this tube and a notch arranged in this tubular body for receiving the said bolt of the safety lock so as to secure the said tube and the wedge connected thereto in their locking position.

3. A device for preventing theft or unau- 

